A major aspect of the physics of the quiet chromosphere is the ubiquitous presence of shocks, propagating from the photosphere upwards [1]}. Such shocks may play an important role in energizing the quiet chromosphere. However, the most conspiquous features of the quiet chromosphere are the so-called spicules [2]}. Spicules are jets of chromospheric material seen as rooted at the chromospheric network. About a decade ago, a new class of spicules, known as “Type-II spicules”, was found in high-resolution imaging observations taken at the Ca2 H line [3]}. These structures are more slender (apparent widths \(\approx 1\) ) and exhibit higher plane-of-the-sky speeds (\(\approx 50 - 100\)  km s\(^{-1}\) ) than their “traditional” counterparts.
